GB667736A - Improvements in or relating to the braking of tractor and trailer vehicles - Google Patents

Improvements in or relating to the braking of tractor and trailer vehicles

Info

Publication number
GB667736A
GB667736A GB846850A GB846850A GB667736A GB 667736 A GB667736 A GB 667736A GB 846850 A GB846850 A GB 846850A GB 846850 A GB846850 A GB 846850A GB 667736 A GB667736 A GB 667736A
Authority
GB
United Kingdom
Prior art keywords
valve
tractor
brakes
trailer
air
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB846850A
Inventor
Stanley Howard Edge
Harold Jeffery
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wabco Automotive UK Ltd
Original Assignee
Clayton Dewandre Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to NL81139D priority Critical patent/NL81139C/xx
Priority to NL6906633.A priority patent/NL160123B/en
Application filed by Clayton Dewandre Co Ltd filed Critical Clayton Dewandre Co Ltd
Priority to GB846850A priority patent/GB667736A/en
Priority to FR1033851D priority patent/FR1033851A/en
Priority to US21549451 priority patent/US2725073A/en
Priority to DEC3989A priority patent/DE897813C/en
Publication of GB667736A publication Critical patent/GB667736A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/32—Details
    • F16K1/34—Cutting-off parts, e.g. valve members, seats
    • F16K1/42—Valve seats
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
    • B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
    • B60T13/24—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release the fluid being gaseous
    • B60T13/26—Compressed-air systems
    • B60T13/36—Compressed-air systems direct, i.e. brakes applied directly by compressed air
    • B60T13/365—Compressed-air systems direct, i.e. brakes applied directly by compressed air for railway vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T15/00—Construction arrangement, or operation of valves incorporated in power brake systems and not covered by groups B60T11/00 or B60T13/00
    • B60T15/02—Application and release valves
    • B60T15/04—Driver's valves
    • B60T15/043—Driver's valves controlling service pressure brakes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T15/00—Construction arrangement, or operation of valves incorporated in power brake systems and not covered by groups B60T11/00 or B60T13/00
    • B60T15/02—Application and release valves
    • B60T15/36—Other control devices or valves characterised by definite functions
    • B60T15/46—Other control devices or valves characterised by definite functions for retarding braking action to prevent rear vehicles of a vehicle train overtaking the forward ones
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/7722—Line condition change responsive valves
    • Y10T137/7771—Bi-directional flow valves
    • Y10T137/7772—One head and seat carried by head of another
    • Y10T137/7774—Supporting valve spring carried by supporting valve
    • Y10T137/7775—Spring stop on supported valve stem

Abstract

667,736. Brakes for tractor-trailer vehicles. CLAYTON DEWANDRE CO., Ltd. April 4, 1950. No. 8468/50. Class 103 (i). A control valve mechanism for compressed air braking systems of tractor and trailer vehicles including a, main valve which, upon operation of a brake actuator, admits compressed air through a direct connection to the trailer brakes, and through a delay valve to the tractor brakes is characterized in that the delay valve includes a movable component formed with at least one restricted orifice and normally held against a seating by spring pressure, whereby under normal conditions of brake application air flows gradually through the orifice to the tractor brakes. but under emergency conditions the valve component is unseated to permit a more rapid air-flow to the tractor brakes, to ensure that the trailer brakes operate before those on the tractor. As shown, the supply of compressed air from a port 2 in the casing of the main valve A is controlled by a valve 12 operated by a piston 6 connected to the brake pedal, the air passing through a conduit 18 to the delay valve B communicating by ports 24, 32 with the trailer and tractor brakes respectively. The piston 6 is spaced from a second piston 8 by a compression spring 7, the piston 8 being slidable in a baffle member 16 and engageable with a disc valve 10 mounted on the stem of the valve 12. A port 17 in the member 16 ensures that while a reaction pressure is exerted on the piston 8, the latter is prevented from being forced backwards by the sudden admission of compressed air when the valve 12 is opened. There is direct communication between the conduit 18 and trailer brake port 24, by a delay valve 26 is fitted between the conduit 18 and tractor brake port 32. The valve 26 and an annular disc 28, which engages a seating 30, are pressed into engagement by a spring 29. An orifice 27 is provided in the valve 26. During a normal brake application air admitted by the valve 12 passes directly to the trailer brakes through port 24, and maintains the disc 28 in contact with the seating 30, so that there is delayed admission of air to the tractor brakes through the orifice 27. On making a rapid brake application the pressure built up in the valve chamber overcomes the load imposed by the spring 28 and lifts the members 26, 28 from the seating 30, so that a more rapid admission of air to the tractor brakes occurs, although the trailer brakes are still applied first.
GB846850A 1950-04-04 1950-04-04 Improvements in or relating to the braking of tractor and trailer vehicles Expired GB667736A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
NL81139D NL81139C (en) 1950-04-04
NL6906633.A NL160123B (en) 1950-04-04 ONE-PIECE SOCKET.
GB846850A GB667736A (en) 1950-04-04 1950-04-04 Improvements in or relating to the braking of tractor and trailer vehicles
FR1033851D FR1033851A (en) 1950-04-04 1951-03-12 Control mechanism for compressed air braking systems applicable in particular to tractors with trailers
US21549451 US2725073A (en) 1950-04-04 1951-03-14 Timing valve
DEC3989A DE897813C (en) 1950-04-04 1951-03-29 Control valve device for air brake systems of tractors with trailers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB846850A GB667736A (en) 1950-04-04 1950-04-04 Improvements in or relating to the braking of tractor and trailer vehicles

Publications (1)

Publication Number Publication Date
GB667736A true GB667736A (en) 1952-03-05

Family

ID=9853036

Family Applications (1)

Application Number Title Priority Date Filing Date
GB846850A Expired GB667736A (en) 1950-04-04 1950-04-04 Improvements in or relating to the braking of tractor and trailer vehicles

Country Status (5)

Country Link
US (1) US2725073A (en)
DE (1) DE897813C (en)
FR (1) FR1033851A (en)
GB (1) GB667736A (en)
NL (2) NL160123B (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2818138A (en) * 1955-08-09 1957-12-31 Alfred Teves Machinen Und Arma Brake system for trains of vehicles
US3023053A (en) * 1960-06-30 1962-02-27 Bendix Corp Pneumatic servomotor unit
US3118706A (en) * 1960-11-29 1964-01-21 Wagner Electric Corp Retarder valve and brake system
US3190700A (en) * 1961-08-10 1965-06-22 Wagner Electric Corp Air ratio changer and system
US3183040A (en) * 1962-11-07 1965-05-11 Wagner Electric Corp Retarder valve and system
AT411921B (en) * 2002-01-22 2004-07-26 Man Steyr Ag CONTROL VALVE FOR CONTROLLING THE AIR SUPPLY TO A PRESSURE ROOM OF A PRESSURE CYLINDER

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2161642A (en) * 1937-04-10 1939-06-06 Wagner Electric Corp Distributing valve
US2269054A (en) * 1940-02-23 1942-01-06 Bendix Westinghouse Automotive Brake mechanism
US2275255A (en) * 1941-01-31 1942-03-03 Wagner Electric Corp Fluid pressure braking system
US2433302A (en) * 1943-08-14 1947-12-23 Thompson Prod Inc Pump valve
US2393589A (en) * 1943-10-09 1946-01-29 Pesco Products Co Relief valve

Also Published As

Publication number Publication date
NL160123B (en)
FR1033851A (en) 1953-07-16
US2725073A (en) 1955-11-29
DE897813C (en) 1953-11-23
NL81139C (en) 1900-01-01

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